This is a question because of something I stumbled over on reddit. I wanted to "alert" the community to the issue which is, as far as I understood it: software from SourceForge might only be available with adware or malware in the future, it's already the case for Filezilla. It is depicted in its full glory on reddit. Not that I mean to impose on everyone to read the thread of course! I just that I think it's a sign of the times (again, sort of, adware did vanish in the last couple of years imho) and it's worth mentioning on here, as some developers in the LaTeX community host their project on SourceForge.
In the case of FileZilla, the primary download option on its homepage links to SourceForge. So there are still alternative downloads available. But the problem is that—although I have not tested it myself—apparently the installer from SourceForge does not work when unchecking the additional software (source) (not that I would advice anyone to use that installer anyway):
The SourceForge installer won't work for me on Windows 8 x64. when I click on the decline button for the sponsored product the installer quits without displaying any error message. I have downloaded it 3 times just in case, each time Windows verifies it as being digitally signed and the same issue happens.